use immediate evaluation for shell calls

This reworks the shell calls in the makefiles to use immediate
evaluation and should improve parallel building.

X-Gentoo-Bug: 289264
X-Gentoo-Bug-URL: http://bugs.gentoo.org/show_bug.cgi?id=289264

Makefile

@@ -11,16 +11,16 @@ _OLDNET_SH=	case "${MKOLDNET}" in \
 		[Yy][Ee][Ss]) echo "net doc";; \
 		*) echo "";; \
 		esac
-_OLDNET!=	${_OLDNET_SH}
-SUBDIR+=	${_OLDNET}$(shell ${_OLDNET_SH})
+_OLDNET:=	$(shell ${_OLDNET_SH})
+SUBDIR+=	${_OLDNET}
 
 # Build pkgconfig or not
 _PKGCONFIG_SH=	case "${MKPKGCONFIG}" in \
 		[Yy][Ee][Ss]|"") echo "pkgconfig";; \
 		*) echo "";; \
 		esac
-_PKGCONFIG!=	${_PKGCONFIG_SH}
-SUBDIR+=	${_PKGCONFIG}$(shell ${_PKGCONFIG_SH})
+_PKGCONFIG:=	$(shell ${_PKGCONFIG_SH})
+SUBDIR+=	${_PKGCONFIG}
 
 # We need to ensure that runlevels is done last
 SUBDIR+=	runlevels

init.d/Makefile

@@ -9,8 +9,8 @@ _OLDNET_SH=	case "${MKOLDNET}" in \
 		[Yy][Ee][Ss]) echo "net.lo";; \
 		*) echo "";; \
 		esac
-_OLDNET!=	${_OLDNET_SH}
-_NET_LO=	${_OLDNET}$(shell ${_OLDNET_SH})
+_OLDNET:=	$(shell ${_OLDNET_SH})
+_NET_LO=	${_OLDNET}
 
 INSTALLAFTER=	_installafter_${_NET_LO}
 CLEANFILES+=	${_NET_LO}

mk/cc.mk

@@ -6,8 +6,8 @@ CFLAGS?=	-O2
 # Default to using the C99 standard
 CSTD?=		c99
 _CSTD_SH=	if test -n "${CSTD}"; then echo "-std=${CSTD}"; else echo ""; fi
-_CSTD!=		${_CSTD_SH}
-CFLAGS+=	${_CSTD}$(shell ${_CSTD_SH})
+_CSTD:=		$(shell ${_CSTD_SH})
+CFLAGS+=	${_CSTD}
 
 # Try and use some good cc flags if we're building from git
 # We don't use -pedantic as it will warn about our perfectly valid
@@ -29,5 +29,5 @@ _CC_FLAGS_SH=	for f in ${_CCFLAGS}; do \
 		${CC} $$f -S -xc -o /dev/null - ; \
 		then printf "%s" "$$f "; fi \
 		done;
-_CC_FLAGS!=	${_CC_FLAGS_SH}
-CFLAGS+=	${_CC_FLAGS}$(shell ${_CC_FLAGS_SH})
+_CC_FLAGS:=	$(shell ${_CC_FLAGS_SH})
+CFLAGS+=	${_CC_FLAGS}

mk/debug.mk

@@ -3,14 +3,14 @@
 # All rights reserved. Released under the 2-clause BSD license.
 
 _RC_DEBUG_SH=	case "${DEBUG}" in "") echo "";; *) echo "-DRC_DEBUG";; esac
-_RC_DEBUG!=	${_RC_DEBUG_SH}
-CPPFLAGS+=	${_RC_DEBUG}$(shell ${_RC_DEBUG_SH})
+_RC_DEBUG:=	$(shell ${_RC_DEBUG_SH})
+CPPFLAGS+=	${_RC_DEBUG}
 
 # Should we enable this with a different flag?
 _LD_DEBUG_SH=	case "${DEBUG}" in "") echo "";; *) echo "-Wl,--rpath=../librc -Wl,--rpath=../libeinfo";; esac
-_LD_DEBUG!=	${_LD_DEBUG_SH}
-LDFLAGS+=	${_LD_DEBUG}$(shell ${_LD_DEBUG_SH})
+_LD_DEBUG:=	$(shell ${_LD_DEBUG_SH})
+LDFLAGS+=	${_LD_DEBUG}
 
 _GGDB_SH=	case "${DEBUG}" in "") echo "";; *) echo "-ggdb";; esac
-_GGDB!=		${_GGDB_SH}
-CFLAGS+=	${_GGDB}$(shell ${_GGDB_SH})
+_GGDB:=		$(shell ${_GGDB_SH})
+CFLAGS+=	${_GGDB}

mk/dist.mk

@@ -9,8 +9,8 @@ DISTFILE?=	${DISTPREFIX}.tar.bz2
 CLEANFILES+=	${NAME}-*.tar.bz2
 
 _SNAP_SH=	date -u +%Y%m%d%H%M
-_SNAP!=		${_SNAP_SH}
-SNAP=		${_SNAP}$(shell ${_SNAP_SH})
+_SNAP:=		$(shell ${_SNAP_SH})
+SNAP=		${_SNAP}
 SNAPDIR=	${DISTPREFIX}-${SNAP}
 SNAPFILE=	${SNAPDIR}.tar.bz2
 

mk/git.mk

@@ -4,5 +4,5 @@ _GITVER_SH=	if git rev-parse --short HEAD >/dev/null 2>&1; then \
 		else \
 			echo ""; \
 		fi
-_GITVER!=	${_GITVER_SH}
-GITVER=		${_GITVER}$(shell ${_GITVER_SH})
+_GITVER:=	$(shell ${_GITVER_SH})
+GITVER=		${_GITVER}

mk/os.mk

@@ -4,8 +4,8 @@
 # Generic definitions
 
 _OS_SH=		uname -s
-_OS!= 		${_OS_SH}
-OS?= 		${_OS}$(shell ${_OS_SH})
+_OS:= 		$(shell ${_OS_SH})
+OS?= 		${_OS}
 include ${MK}/os-${OS}.mk
 
 RC_LIB=		/$(LIBNAME)/rc

mk/prog.mk

@@ -15,8 +15,8 @@ _DYNLINK_SH=		if test "${PREFIX}" = "" && test -e /libexec/ld.elf_so; then \
 			else \
 				echo ""; \
 			fi
-_DYNLINK!=		${_DYNLINK_SH}
-LDFLAGS+=		${_DYNLINK}$(shell ${_DYNLINK_SH})
+_DYNLINK:=		$(shell ${_DYNLINK_SH})
+LDFLAGS+=		${_DYNLINK}
 LDFLAGS+=		-Wl,-rpath=${PREFIX}/${LIBNAME}
 LDFLAGS+=		${PROGLDFLAGS}
 

mk/scripts.mk

@@ -8,11 +8,11 @@ include ${MK}/os.mk
 OBJS+=	${SRCS:.in=}
 
 _PKG_SED_SH=		if test "${PREFIX}" = "${PKG_PREFIX}"; then echo "-e 's:@PKG_PREFIX@::g'"; else echo "-e 's:@PKG_PREFIX@:${PKG_PREFIX}:g'"; fi
-_PKG_SED!=		${_PKG_SED_SH}
+_PKG_SED:=		$(shell ${_PKG_SED_SH})
 _LCL_SED_SH=		if test "${PREFIX}" = "${LOCAL_PREFIX}"; then echo "-e 's:@LOCAL_PREFIX@::g'"; else echo "-e 's:@LOCAL_PREFIX@:${LOCAL_PREFIX}:g'"; fi
-_LCL_SED!=		${_LCL_SED_SH}
+_LCL_SED:=		$(shell ${_LCL_SED_SH})
 
-SED_REPLACE=		-e 's:@SHELL@:${SH}:g' -e 's:@LIB@:${LIBNAME}:g' -e 's:@SYSCONFDIR@:${SYSCONFDIR}:g' -e 's:@LIBEXECDIR@:${LIBEXECDIR}:g' -e 's:@PREFIX@:${PREFIX}:g' ${_PKG_SED}$(shell ${_PKG_SED_SH}) ${_LCL_SED}$(shell ${_LCL_SED_SH})
+SED_REPLACE=		-e 's:@SHELL@:${SH}:g' -e 's:@LIB@:${LIBNAME}:g' -e 's:@SYSCONFDIR@:${SYSCONFDIR}:g' -e 's:@LIBEXECDIR@:${LIBEXECDIR}:g' -e 's:@PREFIX@:${PREFIX}:g' ${_PKG_SED} ${_LCL_SED}
 
 # Tweak our shell scripts
 .SUFFIXES:	.sh.in .in

mk/sys.mk

@@ -12,8 +12,8 @@ SH=			/bin/sh
 
 PREFIX?=	
 _UPREFIX_SH=		case "${PREFIX}" in "") echo /usr;; *) echo "${PREFIX}";; esac
-_UPREFIX!=		${_UPREFIX_SH}
-UPREFIX=		${_UPREFIX}$(shell ${_UPREFIX_SH})
+_UPREFIX:=		$(shell ${_UPREFIX_SH})
+UPREFIX=		${_UPREFIX}
 LOCAL_PREFIX=		/usr/local
 
 PICFLAG?=		-fPIC
@@ -30,8 +30,8 @@ INCDIR?=		${UPREFIX}/include
 INCMODE?=		0444
 
 _LIBNAME_SH=		case `readlink /lib` in /lib64|lib64) echo "lib64";; *) echo "lib";; esac
-_LIBNAME!=		${_LIBNAME_SH}
-LIBNAME?=		${_LIBNAME}$(shell ${_LIBNAME_SH})
+_LIBNAME:=		$(shell ${_LIBNAME_SH})
+LIBNAME?=		${_LIBNAME}
 LIBDIR?=		${UPREFIX}/${LIBNAME}
 LIBMODE?=		0444
 SHLIBDIR?=		${PREFIX}/${LIBNAME}

src/librc/Makefile

@@ -24,16 +24,16 @@ _PKG_PREFIX_SH=	if test -n "${PKG_PREFIX}" && test "${PKG_PREFIX}" != "/" && tes
 		else \
 		echo "-e 's:.*@PKG_PREFIX@.*:\#undef RC_PKG_PREFIX:g'"; \
 		fi
-_PKG_PREFIX!=	${_PKG_PREFIX_SH}
-SED_CMD+=	${_PKG_PREFIX}$(shell ${_PKG_PREFIX_SH})
+_PKG_PREFIX:=	$(shell ${_PKG_PREFIX_SH})
+SED_CMD+=	${_PKG_PREFIX}
 
 _LCL_PREFIX_SH=	if test -n "${LOCAL_PREFIX}" && test "${LOCAL_PREFIX}" != "/" && test "${LOCAL_PREFIX}" != "${PREFIX}"; then \
 		echo "-e 's:@LOCAL_PREFIX@:${LOCAL_PREFIX}:g'"; \
 		else \
 		echo "-e 's:@LOCAL_PREFIX@::g'"; \
 		fi
-_LCL_PREFIX!=	${_LCL_PREFIX_SH}
-SED_CMD+=	${_LCL_PREFIX}$(shell ${_LCL_PREFIX_SH})
+_LCL_PREFIX:=	$(shell ${_LCL_PREFIX_SH})
+SED_CMD+=	${_LCL_PREFIX}
 
 .SUFFIXES:	.h.in .h
 .h.in.h: